Flexible metallic tubing.



E. RUBES.

FLEXIBLE METALLIC TUBING.

APPLICATION FILED JUNI; a, 1908.

' 91 6,890. Patented Mar. 30, 1909.

($17, MS/L',

'ze l ERNEST RUBES, OF BROOKLYN, NEW YORK;

FLEXIBLE METALLIC TUBING.

Specification of Letters Patent.

Patented March- 30, tm.

Application filed June 8,'1908. Serial No. 437,369'.

To all'wtom it may concern:

Be it known that I, ERNEST RUBEs, a citizen of the UnitedStates, residing at Brooklyn, 1n the county of Kings and State of .New York, have invented new and USQUI.

mprovements' in Flexible Metallic Tubing, of which the following is a specification.

This invention relates to metallic flexible tubing for general use, but particularly adapted as a conveying means for high steam pressure and compressed air.

The primary object of the invention is to provide-.a readily flexing metallic tube or hose haringa special arrangement of components joined in such manner as to prevent leakage at any point and characterized by a lsuperiority of' structure, strength and dura.-

bilit-y as compared to similar devices i-iously produced.

The invention consists in the construction and arpangement of parts hereinafter specified.4

. In the drawing: Figure l is an elevation of a portion of a tube or hose partiallyY broken away and embodying the features of' the invention. Figs. 2, 3 and l are detail views of portions of the essential components of the tube or hose as shown by Fig. l. Fig. 5 is a detail view-in longitudinal section of a portion of the tube or hose showing a slight modification. Figs. 6 `and 7 are de tail views of' t'Wo of the components of the tube or hose as shown by Fig. Fig. 8 is a detail View in longitudinal section of a portionf the tube or hose showing a further modification. F ig. 9 is a detail -View of one fof. the components of the -tube or hose snown by Fig. S.

Simiiar characters 'of reference are employed to indicate corresponding parts in the several views.

The numeral l designates a tubular core, inner support or lining, consisting` of a metallic ribbon or strip which is spirally Wound and formed with ontnardi'i' extending edge flanges 2 and providing a channel 4a. This core, support or lining by reason of its channeled formation serves as areceptive means for the remaining componente of the tube or hose and is common to all of the forms shown by the drawing. This core, inner support or lining has the contiguous flanges 2 and 3 spaced sufliciently to insure flexibility, and though thesaid core is formed from astrip or ribbon of premetal having considerable Width., its jointure and cooperationv with the remaining components is such as not to set up resistance to the desirable flexing of the tube or hose .as a Whole, and owing to the Width of the sevieral coils a more effective, non-leaking joint may be produced between the said core, inner support or lining and the outer components of the tube or hose. From a standpoint of economy and expedition in the structure and formation of the tube or hose, the rather Wide dimension of the coils of the core,I inner support or lining 1 is Veryefi'ective. as the said core, support or lining may be more rapidly shaped on a suitable mandrel and the foundation structure of the tube or hose more quickly produced than if a narrower strip was used. The remaining components of the tube or hose consist of an outer coupling member fl and a locking member 5. The coupling member 4 also consists of a ribbon or strip of metal having considerable width bent to form a central housing or flat arch 6 and box flange 7 at opposite sides, the said box flanges having their 'horizontal extremities 8 spaced from the adjacent vertical Walls 9 of the housing or llat arch G, as clearly shown by Fig. 3.-

The coupling member 4 is spirally Wound on and over the core, inner support or hnmg l, the housing or flat arch 6 of each coil of the coupling member covering the flanges 2 Y and 3, the latter being centrally disposed with relation to the housing or flat arch 6, as shown by Fig. 1, and between the said flanges 2 and 3 and the vertical Walls 9 of the housing an asbestos packing cord or strip 1G circular in cross-section is interposed and spirally Wound with the said coupling member at the time the latter is applied.

The locking member 5 is in the form of a tube rectangular in cross-section, as shown by Figs. l and Q, and having an innerentrally disposed throat ll extending fully throughout the length thereof, and provided with inner horizontal flanges l2 defining said throat. or forming the Walls for the latter. This locking member 5 is spirally Wound over and connected With contiguous box flanges 7 of the coupling member 42, the flanges l2 of the locking member andthe terminals or outer horizontal flanges 8 of the coupling member interlitting so that the said terminals or outer flanges 8 of the coupling member Will lie -Within and against the outer portion of the locking member, but in closed within the latter, as shown by F igfl.

. 1n applying the locking member 5 over and spirally winding the same n the coupling member the flanges 12 of tie said locking member are formed or upset inwardly, and a space is produced between the said flanges 12y of the locking member and the outer terminals or flanges 8 of the coupling member which isv filled with an.

asbestos packing 13 which is compressed botween the flanges 12 and the terminals or flanges 8 forming a part of'- the box flanges T. The outer surfaces of the coupling meniber et and locking member 5 are flush-and sufficient space is left between the flanges 9 of the said coupling member and the adjacent portions ofthe locking member to per-.f

mit free movement of the said .members in flexing orbending the tube or hose. It will be observed that the channel la of the core, inner support or lining 1 serves asa receptive means for a greater portion of each coil of the coppling member and embodying the box flanges' and about one-half Iof the housing, and, further, that the locking meinber 5 is disposed in central relation with respect to the said channel ta, and this disposition of the several components, to-

gether with the introduction of' the packiiigs 12 and 13 is effective in .producing a tight flexible jointure ofthe said components and the formation of .a tube or hose which will be practically serviceable as a conyeying means lforsteam under high pressure and compressed air without the least liability of leakage.

As hereinbeforeindicated, the core, inner support or lining 1 is the saine in the structures shown by Figs. 5 and 8 and in Fig. 5

the coupling member 14: is lslightly Varied, as clearly illustrated by Fig. 7, and the variation consists in dispensing with the box flanges'7 hereinbefore.described and replacing the latter by right-angular flanges 15 fully open at their outer portions, as `at 1 6. The locking members 17 in this instance are also of tubular forni, but are distinguished A .from the locking members shown by Figs. 1

and 2 by havingA the sidesinwardly bent at an acute angle as at 1S and terminating in short horizontalflanges 19. Between the inner terminals of the flanges 19a throat 20 isl formed, into vwhich project the terminalv straight flanges 21 of the coupling memberJ 14k and which vproject outwardly, as shown byligj, and between the lianges21, 18 and 19 asbestos packing strips 22 are introduced.

Betweenthe lianges2 of the core or inner support 1 and the flanges 23 inwardly pro# .jecting to form a .part of the outwardly opening flanges 15 at opposite sides of the coupling member lll, an asbestos packingl strip 24 is introduced.y u

isclaimed as new, is:'

,vllt will be understoodthat the .components ofthe tube or casing as shown by Fig. 5 are spirally wound in a manner similar to the components illustrated by F ig. '1, and it will be obserted that the core, inner support or lining 1 in the modified construction shown `by Fig. 5 serves both an interlocking and receptive means for the remaining coinponents lin a manner similar to the construction' disclosed by Fig. 1.

ln. F ig. 8 the core, inner support or lining 1 is the saine as in the preceding figures-.aud the coupling member 14 is precisely the same in its construction as that illustrated by Fig. in' .the essential difference vconsists in the' locking member 25 which, in this in Fig. 5, and like reference characters are x applied thereto. ln the modification shown stance, consists of' a channeled strip having side flanges 26 at right angles to the main' body of the member and without inwardly 'projecting flanges' at lthe terminals of the side flanges. Between the flanges 21 of the coupling member and the flanges 26 of the locking member an asbestos packing cord or strip 2T isinterposed, and between the llaiiges 2- of the core, inner support or lining 1 and the flanges 23' of the coupling meiiibei' a second packing strip or cord 28 is tening with less trouble in assemblage than has been possible heretofore in ltube or pipe constructions of this class. There are essen-- tial ly three thicknesses of metal superposed an d i'a st ened a nd forming a smooth and even surface both outside and inside ofthe tube. A flexible tube of this type and particular construction will withstand considerable outside, and inside sti-ain .or pressure and the parts: will not become detached ated. y

Having thus described the invention, what l. A flexible tubing of the class specified .composed 'of a channeled lining spirally wound, a coupling member fitted in portions of the lining and covering` the side flanges thereof, a locking member having inwardly projecting. flanges .cooperating with and 'joining the extremities of the coupling meinber, and packing strips introduced between parts of the lining, coupling and locking members..

or dissoci- 2. A flexible metallic tubing of the class specified composed of a lining and having an outer channel, a. coupling' member applied over and embracing contiguous portions of the lining and having flanged side portions, a. locking member engaging and covering the flanged side portlons of the coupling member,l and packing strips introduced between portions of the lining, coupling and locking members, the lining, coupling and locking members being spirally wound.

gaging the receptive means and securing the contiguous edge portions of the said coupling member, packmg strips being 1nterposed between portlons of' the lining,

' coupling and locking members.

et. A flexible metallic. tubing of the class specified composed of an inner lining having an outer channel extending fully thereover, an out-er coupling member covering and securing contiguous edges of' the lining and lit-ting in the channel' of the latter, and a locking member partially fitting in the side port-ionsof the coupling member and securing and. covering contiguous edges of the said coupling member, packing strips being interposed between portions of' the lining and the tivo members.

. 5. A flexible metallic tube of the class specified composed of an inner spirally wound channeled lining, an outer coupling member spirally wound around and securing edge port-ions of the lining, alocking mem.- ber spirally wound over and securing contiguous edge portions of the couplingmember, and packing strips int-reduced between portions of the lining. coupling and locking niei'x'lbers, the locking member being flush with the coupling member.

6. A. flexible metallic. tube of the class Specified composed of, an inner spirallv wound channeled lining, provided with edge flanges, 4an outer coupling member spirali)r wound on/the lining and having a housing to receive the edge flanges of the latter and provided with opposite side edge portions projecting into the channel of the lining, a locking member spirallj7 wound on the coupling member and embracing the side edge portions of the said coupling member.I and packing strips'introduced between portions oi the lining, conplin and locking members. Y. 7. A liexible' meta. lic tube of the class specified consisting of a spirall)r wound lining having an outer channel formed by side flanges, a coupling member for the lining fitted over the side flanges and having its side portions projected into the channel, and a. locking member embracing and covering the side portions of the coupling member, the two members being spirally wound. S. A flexible tube of the class specied composed of an inner spirally wound lining having an outer channel formed byoutl'ardly projecting side flanges, a. coupling member spirallyv wound en and embracing contiguous side flanges of the lining and also having its side portions projected into the channel and formed With flanged seat means. a locking 'member hav1ng side portions let into and cooperating with the seat means at opposite sides' of the coupling member to form a flush outer surface with the latter, and packing strips introduced between portions oit the lining and members.

9. A. flexible metallic tube of the class specified composed. of an inner spirallj1 wound wide strip of' met-al having an outer channel formed by side flanges, an outer eenpling member extending over and embracing contiguous side flanges of the lining and projecting into portions of the channel and spiralljT Wound on the said lining, a spirally Wound locking member extending over and covering and also projecting into portions of the coupling member, and packing strips introduced between portions of t-he lining and members. 1.0. A flexiblelnietallicl tube of the class specified composed of an inner spirally wound channeled lining, an outer coupling member spirally Wound on and having a housing to receive portions of the lining and provided with box flanges at opposite sides, a spiral'ly wound locking member of tubular form fitted into and embracing portions of the box flanges, the said box flanges and locking member having horizontal flanges in contiguous relation, packing strips introduced between the said horizontal llanges, and other packing strips inserted between portions of' the lining and the box flanges of the ,-oupling member.'

ln testimonj-v whereof I have hereuntol set my hand in presence of two subscribing wit- Witness s:

C. A. Rown, CHAS. S. HYER. 

